Little Rock Zoo officials say they don't know whether they'll replace some of the large animals that died at the zoo in 2013.

Spokesman Susan Altrui told the Arkansas Democrat-Gazette (http://bit.ly/1m0ldC9 ) that officials are working with the Association of Zoos and Aquariums' Species Survival Plan program to determine whether the animals will be replaced.

A lion at the zoo died in January, a rhinoceros died in September and an elephant was euthanized after being found lying on her side and unable to get up. Then in December a giraffe died after another giraffe is believed to have broken through a gate and fought with the animal.

The zoo received two elephants in October — but Altrui says it isn't known when or if the other animals will be replaced.